RFI Corporation was established in 1961 and today is an industry leader in solving complex EMI/EMC/RFI, pulse and power problems for the aerospace, defense, homeland security, medical, industrial and commercial markets.

Today with more than 100,000 existing designs, RFI has established a long-term quality reputation in the industry, from EMI/EMC/RFI power filters to high voltage and recon mica capacitors to power / flyback transformers and various magnetic components, including pulse forming networks. RFI Corporation’s engineering and design work in high-voltage magnetics has won various recognition awards from the nation’s leading Fortune 500 corporations.

RFI quality standards include AS9100, ISO 9001:2015, ITAR registered, MIL-STDs 220/285/202/461/462, J-STD-001, QPL to MIL-PRF-15733, UL 1283, Tempest, NEMA STDs 1 -12, FCC Part 15, MIL-PRFs-27 and 19978, MIL-N-23182, and MIL-C-39001. Further, RFI’s extensive engineering, manufacturing & testing capabilities incorporate lean manufacturing and six sigma principals throughout their 60,000-square-foot facility.

Products include:
  • Cylindrical Filters
  • Miniature Filters
  • Subminiature Filters
  • Rectangular Filters
  • Power Filters
  • General Purpose Filters
  • Telephone & Data Line Filters
  • Signal Filter Assemblies for Secure Installations
  • Signal & Telephone Circuit Filters
  • SPower Line Filters for Shielded Areas
  • Power Factor Correction Inductor Assemblies
  • Feed Through Capacitors
Downloadable Product Literature: Koehlke: Your RFI Authorized Distributor

Koehlke is your go-to supplier as an authorized distribution partner for RFI filters, capacitors and magnetics. On our site, you will find links to product catalogs, technical data, and part number searches for availability.

  • For RFI detailed product information, please download the PDF literature located below.
  • For additional information or to request a quote, our customer service team is at your service from 8 am - 5 pm EST weekdays through our Live Chat feature, or by calling 1-937-KOEHLKE (1-937-435-5435).
  • Begin a product search. To search a specific product, enter the part number or keywords into the search box.
  • To view a product category, select from the list to the right.
  • For additional information on any of our offered products, for technical assistance, or to request a formal quote, please contact sales@koehlke.com.

Koehlke is proud to partner with ETI for authorized distribution of several product lines including Arizona Capacitors, Tepro, and Wavetronix.

Do you have any question? Get in touch with us